T45 89mm Dome Spheric Button Threaded Drill Bit for Rock Drilling
The T45 89mm dome spheric button drill bit is a threaded rock drilling bit designed for demanding drilling applications in mining, quarrying, construction, tunnelling and rock excavation. With an 89mm diameter, T45 threaded connection, dome/spheric button configuration and normal body design, this drill bit provides a balanced cutting structure for efficient rock penetration and reliable drilling performance.
Product Overview
The button arrangement combines 13mm x 8 and 12mm x 5 tungsten carbide buttons, delivering good wear resistance and stable rock-breaking performance. The T45 thread connection provides a secure fit with compatible T45 drill rods and drilling equipment, making this bit suitable for applications where consistent drilling performance, good hole quality and dependable tool life are required.
Main Applications
- Mining: Production drilling in underground and surface mining operations.
- Quarrying: Blast-hole drilling in granite, limestone and marble quarries.
- Tunnelling: Precision drilling for tunnel development and rock excavation.
- Construction Drilling: Foundation and anchor hole drilling in construction projects.
- Bench Drilling: Rotary-percussive rock drilling in medium to hard rock formations.
Key Features & Advantages
- Balanced Cutting Structure: The 13-button dual-diameter layout (8 x 13mm gauge + 5 x 12mm front) provides efficient rock penetration and reliable drilling performance.
- Dome / Spheric Button Design: Offers good wear resistance and stable rock-breaking performance in medium to hard rock.
- Secure T45 Thread Connection: Provides a reliable connection with T45 threaded drill rods and compatible drilling equipment.
- Normal Body Design: Delivers dependable tool life and consistent hole quality across drilling applications.
- Wide Compatibility: Suitable for percussive rock drilling in mining, quarrying, tunnelling, construction and rock excavation.
Product Specifications
| Bit Diameter | 89 mm (3 1/2 inch) |
| Thread Connection | T45 (Top Hammer Heavy Thread) |
| Button Type | Dome / Spheric |
| Button Configuration | 13 Buttons: Gauge 13mm x 8 + Front 12mm x 5 |
| Body Type | Normal Body |
| Carbide Grade | Tungsten Carbide |
| Drilling Type | Percussive Rock Drilling |
| Compatible Rod | T45 Threaded Drill Rod |
| Primary Application | Mining, Quarrying, Tunnelling, Construction, Rock Excavation |
FAQ
Q1: What is a T45 89mm drill bit used for?
A: It is mainly used for percussive rock drilling in mining, quarrying, tunnelling, construction and rock excavation. Its 89mm diameter provides a suitable drilling size for medium-to-large rock drilling applications.
Q2: What type of buttons does the T45 89mm drill bit use?
A: It uses dome or spheric tungsten carbide buttons. The specific configuration is 8 x 13mm buttons plus 5 x 12mm buttons, providing a balanced button layout for rock penetration and wear resistance.
Q3: Which drill rod is compatible with an 89mm T45 drill bit?
A: It is designed for use with T45 threaded drill rods and compatible T45 drilling equipment. The matching thread connection provides a secure connection during percussive rock drilling.
Q4: Is the T45 89mm dome button bit suitable for hard rock?
A: Yes. It is designed for rock drilling applications ranging from medium to hard rock, depending on the rock formation, drilling machine, impact energy, rotation speed, flushing conditions and operating parameters. Dome carbide buttons provide a good balance between penetration performance and wear resistance.
Q5: What is the button configuration of the T45 89mm drill bit?
A: The standard configuration is 13mm x 8 + 12mm x 5 with a dome/spheric button design and normal body. This button arrangement provides a stable cutting structure for consistent rock-breaking performance.
